Electric vibrator.



No. 798,839. 7 PATENTED AUG. 29, 1905.

. H. J. HEENEY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV. 22, 1904v 3 SHEETS-SHEET '1 ANBIIEW. B. GIMIAIno. mcwumoamruzns. wusnmcmu. n cy No- 798,339. 7 PATENTED AUG. 29, 19056H. J. HEENBY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV; 22, 1904.

3 SHEBTSSHBET 2.

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No. 798,839. PATENTED AUG. 29, 1905. H. J. HEENEY.

ELECTRIC VIBRATOR.

APPLICATION FILED NOV. 22. 1904 3 SHEETSSHEET 3.

//III///%// mnniw. u. mumn 00,. Pumaumocmmus, Msmnmcn, n 04 UNITEDSTATES PATENT OFFICE.

HENRY J. HEENEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HOLTZER I CABOTELECTRIC COMPANY, A CORPORATION OF MASSACHUSETTS.

ELECTRIC VIBRATOR.

Specification of Letters Patent.

Application filed November 22,1904. Serial No. 233,859.

To all whom vit may concern.-

vBe it known that I, HENRY J. HEENEY, a citizen of the United States,residing in Boston, county of Suffolk, and State of Massachusetts, haveinvented an Improvement in Electric Vibrators, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters and numerals on the drawings representinglike parts.

The present invention relates to an electric vibrator, and is embodiedin a vibrator to be operated by direct currents, the invention beingespecially applicable to large gongs, where considerable power isrequired to strike the necessary blows and a comparatively slow rate ofvibration is desirable.

The invention is further embodied in novel details of construction andarrangement whereby the operative parts may be thoroughly incased androtected, the construction, furthermore, lyeing simple and inexpensive.

In the construction embodying the invention two sets of, electromagnetsare used, with an armature movable between the polar extremities ofthesaid electromagnets, the said armature being connected with abell-striker, which in turn controls the circuit-closers which cause thetwo sets of electromagnetsto be alternately energized while current isflowing through the instrument. The construction is such that thearmature normally stands midway between the polepieces of the two setsof electromagnets, so as to be well within the magnetic field of either,and when the said armature is in such intermediate position a circuit isclosed through one or the other of said sets of electromagnets, but notthrough both. When, therefore, current flows through the instrument, oneset of electromagnets will be energized, so as. to attract the armaturein one direction, the movement of the armature producing a correspondingmovement of the bell-striker, which movement in turn results in theoperation of a circuit-controller which breaks the circuit through theelectromagnets which have been energized after the said bell-striker hasacquired suflicient momentum to, strike the bell. At this period thecircuit through the entire instrument is open; but the bell-striker,which is arranged to return to, an intermediate position, preferably bycurrent is turned on, and after the current ceases and the parts returnto their normal position the circuit will remain closed through one orthe other set of electromagnets, so that the device is ready to operateas soon as the current is turned on again.

Figure 1 is a plan view, on a small scale, showing the generalarrangement of the gongs and striking mechanism. Fig. 2 is a plan view,on a larger scale, with the cover of the casing removed and the partsshown in their normal position. Fig. 3 is a similar view with the partsshown in the position in which they stand after the impulse of currenthas passed through one set of electromagnets and the circuit broken bythe action of the bell-striker, and Fig. 4 is a partially verticalsection on the line as of Fig. 3 looking toward the left.

The invention is herein shown as embodied in a two gong vibrator, thegongs A being mounted at the ends of a curved base or support A thestriking mechanism being inclosed in a case A mounted on the baseplatebetween the gongs. As herein shown, the case is provided with lugs A toreceive screws which hold the case upon the base, the case being furtherwholly incased by a cover A secured to the face of the case by means ofscrews A. At the top and sides the case is provided with a flange Aprojecting beyond the face of the cover, and thereby affording furtherprotection from moisture, &c. The bell-striker a is pivotally supportedin the lower wall of the case and is connected with the armature b bymeans of a swivel connection, the upper end of the bell-striker a beingshown as passing through a boss 6 which has a stem 6 bearing in anopening or bore through the lower end of the armature 6. Through thisconnection, therefore, the movement of the armature b in one directionwill cause a corresponding multiplied movement of the bell-striker a inthe opposite direction sufficient to cause the said striker to ring thegong. As herein shown, the bell-striker a is provided with a 4 and 4 andinto the path of the bell-striker hub or enlargement a, which fits in anopen-- ing through the lower wall of the case, there beingfia stem aprojecting rearward from said hub and having a bearing in a bore'or vsocket formed in the lower wall of the case. The parts are held inposition by the'case' cover, and by the construction described theopenin through the wall of the case is substantia ly closed, so that thecase is practically sealed when the apparatus is in opera tion. Thearmature b is pivotally supported at b -ne'arthe top of the case andextends"= from'said pivotal support'between the polarextremities ofelectromagnets c and d, which are arranged to be alternately energizedby current entering the instrument from termi nals'connected'withbinding-posts A and A".

From the-binding-post A the circuit extends through-the conductors 1and-l to the elec'" tromagnets c and d, respectively, andthence throughthe conductors 2 and 2*, respectivelyyto switch-terminals 3 and 3, whichterminals cooperate with other terminals 4 and 4, both'of which areconnected with a conductor'5, which leads to the binding-post A". If,therefore, the switch-contacts3 and 4 are-in electrical engagement witheach other, the current: will pass through the electromagnets 0, whileifthe contacts 3* and 4* are in engagement the current will pass throughthe electromagnets (i. As herein shown, the switch-terminals 4 and 4*con' sist of light springs which are arranged-to beacted upon by atongue or actuating member e, pivoted at e upon the armature b, the saidtongue extending down between the springs a,- the upper end of whichengages said tongue, holding the same in contact with one or the otherof the switch-terminals, as best I shown inFig. 2. In the constructionshown the-bell striker is in a vertical position,-so

that normally it will hang in the position shown in-Fig. 2 midwaybetween-the-two gongs andwillclose the circuit through one or the otherofthe sets of electromagnets, ac

cording to the side of thebell-striker against Whichthe tongue-e rests.

With the parts in the'position shown in Figl-Z ifthe current is turnedon-the armatermediate position between the-contacts'4 and4 therebybreaking the circuitentirely.

As the bell-striker returns, however, through force'ofgravity orotherwise, toward them-- termediate position it will 'engagethe tongue 6upon the opposite side, thus closing :the circuitthrough the contacts 4and 3*, thereby energizing the ele'ctromagnets d and-produc resales) inga movement'of thestriker a, inthe opposite direction. This operationwill continue so long asthe currentis turned on; causing the-- gongs tobe struck alternately and atza relatively slow speedf Thespring-contacts are separatedfrom each other at their upper ends byinsulating-strips f and are secured to the armature by means of screws fFiglp4', there being a strip of insulating material f be.- tween theinner spring of each pair and said armature. As shown in Fig. 4, thesprings are U-shaped, the movable ends thereofpro j ecting forwardbeyond thefaceof thearrna ture, soasuto =be'=-aeted-upon by the tongue'6. The tongue e is alsoinsulated, as shown; so that noneof the metallicparts of the instru' m'ent frame- '01 casing are lI1'fl1I6IIO6d'byjC1f1T rent; and *there'ds '-therefore"'-nochance (ofgrounding "if the-"vibrator is plab'ed wherd there is l-iabi'lity-ofgettinga 'metallic circuit 8 5 through the frame to the ground.Tli'eumiL tiplying connectionbetween -the- 'ar'mature and thebell-striker-insures distinct and -pow-=- erful blows of'the-strikerwith material-"inter I vals of time-between.

1. Ina *two-gong vibratorfa base orsupport; a gong mounted at each endthereofg 'a I; casingmounted on said support midway between said gongs'ya strikerpivotally support 5 ed in-thelo'werwa'llof sai casin yanarmature contained in sa-idtasing an connectcd with saidstrikeryelectronragnets to'act upon said armature; andcircuit-controllers also contained withinsaid'casing-and' operatedby 10osaid-striker, substantially "as described! 2; f In a vibrator, "aninclo'sin'g casing ;& a vibrating member-pivote'd-in the lower-Wa'lloi isaid casing and having a hub or-enlargement fitting an opening iii-saidwalloppositely" IO 5 disposed electromagnets" within said casing anarmature 'pivotally' supported between, said 3 electromagnets a: swivelconnecting-- member connecting said armature with saidstriker;circuit-controllers carriedby saidar- 1 1o mature; and-"anactuatingsm'ember for said circuit-f controllers" opera-ted by said- 5bellstriker in the movement thereof,- substantially *as described;

' 3 In a vibrator ithe combination with op-' 1 1 5 positely dis'posedelectromagnets of a pivot-" ally supported: ar-mature between the polesof said electromagnetsg spring.- contacts mounted on-the opposite sidesof said arma1+ ture=-to- -co-ntrol,= respectively; thewcircuitsi--12othrough said =e1e'c'tromagnetsi; a striker -arrn: pivotally supportednear one endg and hav ing 'a swive I connection- 'neara sai-d supportrwith saidarmature'yand a tongue pivo'tally connectedwithsaidarmature'and projecting between said contacts intoithepath' of e ther striker;the length 30f said itongue being suchthat thestriker -pass out ofcontact therewith duringthe movement of the armature'e inreither'direction; substantially as described: *1 0 4. In avibrator,electromagnets; an arma- In testimony whereof I have signed my turepivotally supported between said elec- I name to this specification inthe presence of 10 tromagnets; a circuit-congrolleili for said electwosubscribing Witnesses. tromagnets mounted on t e sai armature; a

5 bell-striker connected With said armature HENRY HEENEY' andcooperating with said circuit-controller; Witnesses: and an independentpivotal support for said HENRY J. LIvRRMoRE, bell-striker. MARGARET E.COVENEY.

